| Pronunciation: | | prow'vItumin
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 WordNet Dictionary |
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| | Definition: | |
[n] vitamin precursor; a substance that is converted into a vitamin in animal tissues |
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PROVITAMIN is a 10 letter word that starts with P. |
| | See Also: | | carotene, carotin, hydrocarbon, provitamin A |
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| Biology Dictionary |
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| | Definition: | | A chemical that becomes a vitamin via a natural reaction within an organism, such as when 7-dehydrocholesterol in the skin becomes vitamin D when it's exposed to sunlight. |
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